We applied transvenous endomyocardial biopsies in 16 patients with the clinical diagnosis of cardiomyopathy in 11, ventricular arrhythmias in 3 and, myocarditis in 2. Thirteen patients were male and the mean age was 35.1±13.4 years. We found some diagnostic value of the procedure in 79 % (11/14) and 67 % (8/12) by light and electron microscopies, respectively, of those patients in whom sufficient biopsy material was available. We discussed the diagnostic value and current status of the endomyocardial biopsy.
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